Báo cáo hóa học: " A Novel Efficient Cluster-Based MLSE Equalizer for Satellite Communication Channels with M-QAM Signaling" ppt

... 9 ade- tailed performance comparison for the case of an AWGN channel and 16-QAM sig naling at −6 dB IBO with 60, 100, 1000, and 50000 training symbols for the Volterra equalizer is given. For ... characteristic and the nonlinear phase function Φ (A) is called the AM /PM characteristic. These are expressed as g (A) = α a A 1+β a A 2 ,(3) Φ (A) = α p A 2 1+β p A 2 (4) and pl...

Ngày tải lên: 22/06/2014, 23:20

... messages can be packed when there are travel 2 EURASIP Journal on Wireless Communications and Networking demands in that area can be satisfied. However, another fact is that the pigeons available ... information precessing and rescue commanding is usually far away from the disaster area. As shown in Figure 1, t r is the travel time for a pigeon between the headquarter and the disaster area...

Ngày tải lên: 21/06/2014, 23:20

... conjugate and h i is Gaussian random variable with zero mean and variance of N 0 /2. E b is the transmitted bit energy and ˆ a (iter) k is the estimated data of kth user at iter-th iteration stage. ˆ β i,m is ... Raphaeli, A new approach to parallel interference cancellation for CDMA, in IEEE GLOBECOM 3, 1452–1457 (1996) 7. D Divsalar, M Simon, D Raphaeli, Improved parallel interferen...

Ngày tải lên: 20/06/2014, 22:20

... fractional delay is necessary for precise time alignment of the two bands. A good fit for this purpose is a standard all- pass interpolated fractional delay line. However, in contrast to usual applications ... where a specific fractional delay time at DC is required, we need to match a particular fractional delay at an arbitrary frequency. The equation specifying the group-delay of...

Ngày tải lên: 21/06/2014, 05:20

... Advances in Wireless Communications (SPAWC ’03), pp. 42–45, Taoyuan, Taiwan, March 2001. [14] L. Anttila, M. Valkama, and M. Renfors, “Circularity-based I/Q imbalance compensation in wideband ... stage. For a slowly varying indoor multipath channel this can be a valid assumption. Thus, once we have reliable estimates of IQ imbalance gain parameters, we can then compensate the channel ba...

Ngày tải lên: 21/06/2014, 08:20

... HH-VBF can control forwarding redundancy by adjusting β. Each node that qualifies as a candidate forwarder delays the packet forwarding by an interval T adaptation which is computed the same way as ... forward the packet. We refer to such a node as a candidate forwarder for the packet. As in VBF, each candidate forwarder maintains a self- adaptation timer which depends on the desirab...

Ngày tải lên: 21/06/2014, 17:20

... is an increasing demand for rapid, parallel fabrication strategies for nanoholes and nanopillars. Some applications that require repetitive uniform nanoholes and nanopillars over large area are ... Micro- and nanospheres that have highly uniform sizes and could easily produce a hexagonally close packed (HCP) self-assembled monolayer have attracted wide- spread attention for forming la...

Ngày tải lên: 21/06/2014, 22:20

... + n MAC sublayer Physical layer PPDU Physical Protocol Data Unit Frame Control Sequence Number Addressing Fields Data Payload FCS Frame Check Sequence MHR MAC Header MSDU MAC Service Data Unit MFR MAC ... outperforms both ALG1 and ALG2. Finally, for a dense network (R = 12), ALG3 still performs better than both ALG1 and ALG2. Thus, ALG3 outperforms both ALG1 and ALG2 across the full range...

Ngày tải lên: 21/06/2014, 22:20

... not available at the transmitter. If the av- erage attenuation of the channel for each cooperative node pair can be estimated, we can use an equal signal-to-noise (SNR) p olicy [7] to allocate ... co- operative nodes receive the data packet, they will encode the data packet by orthogonal STBC, and transmit the data as an individual antenna with transmission power P out jt in the MIMO ante...

Ngày tải lên: 22/06/2014, 22:20

... S. Gollamudi, S. Kapoor, S. Nagaraj, and Y F. Huang, “Set- membership adaptive equalization and an updator-shared im- plementation for multiple channel communications systems,” IEEE Transactions ... updated in a stochastic manner (with all fi lters having equal probability of an update), M-Max NLMS [6], and the proposed NLMS. The performance of the full update NLMS is also shown for com...

Ngày tải lên: 22/06/2014, 22:20